/Engine/Plugins/Media/MediaCompositing/Source/MediaCompositing/Public/MovieSceneMediaTrack.h
Adds a new media source to the track.
virtual [UMovieSceneSection](API\Runtime\MovieScene\UMovieSceneSection) * AddNewMediaSourceProxyOnRow ( [UMediaSource](API\Runtime\MediaAssets\UMediaSource) * MediaSource, const [FMovieSceneObjectBindingID](API\Runtime\MovieScene\FMovieSceneObjectBindingID) & ObjectBinding, int32 MediaSourceProxyIndex, [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) Time, int32 RowIndex )